Fire protection unit



J. A. BROWN FIRE PROTECTION UNIT Filed Sept. 21, 1936 Oct. 18, 1938.

INVENTOR.

Patented Oct. 18, 1938 g UNITED STATES PATENT OFFICE FIRE PROTECTION UNIT Joseph A. Brown, Colorado, Tex., assignor of onehalf to The Philip Carey Manufacturing Company, a corporation of Ohio Application September 21, 1936, Serial No. 101,724 7 Claims. (01. 72-94) This invention relates to a fire protection unit ceiling of the building structure to receive same. for separating parts of heating equipment from The collars are advantageously made from a. sin surrounding combustible materials, and particue piece of th eta material bent to provide larly pertains to a fire prevention unit adapted to Spa ed fl s a The ula em e 5 be interposed between the flue pipes in buildings and ars, to be light n e y advanta- 5 and adjacent parts of the building construction s y be m fr m al mi m m ri l. The in order to prevent ignition of any combustible u er fl n e 7 internally threaded at 8 to enmaterial in the building or a part thereof which ease the s rew threads 9 on the tubular member is around or adjacent the flue pipes. 3, and the other flange 6 is provided with screw 10 The invention comprises generally multiple threads Ii] to engage the screw threads I l on the 10 tubular members of different diameters assoend of the other t b r m mber One Of the ciated together in juxtaposition, one within ancellars m y be fir assembled on h pe t ve other, and spaced apart to provide a int ends of the two tubular members to hold them in diate chamber that ma advantageously b filled spaced relation and before the other collar memwith suitable insulating material. The construch r is ap li d the in rv ni g m r we n 15 tion is made up as a unit which may be readily them may be advantageously fi d Wi h a y suitinstalled in a building construction surrounding able non-Combustible filling material l2 Such as the flue pipe t separate and protect same from asbestos fiber, mineral wool or the like. The walls adjacent parts of a b il i The tubular of the tubular members are preferably spaced bers are preferably, except as to diameters, of about two inches apart- 20 the same construction and may be provided with The flue protector may be advantageously semeans by hi they are readily Secured cured to the roof and ceiling rafters or other gether surrounding structure of the building in which it For b tt understanding of t invention, is installed by suitable fastening means. This fas- 5 reference may. be made to the accompanying telling means is typified by one more drawing in which: hangers l3, which are in the form of a rod pivoted Fig. 1 is a vertical cross-sectional view of a at one end to a fin Secured at t0 the portion of a building having a fire protection unit outer wall of the protector and screw threaded on embodying th i t installed therein; the other end. With nuts I! associated with Fig. 2 is an enlarged vertical cross-sectional the screw threaded end, the hanger may be 30 ie of one end of t Composite unit; and clamped to adjacent roof rafters I8 of the build- Fig. 3 is a horizontal cross-sectional View on mg construction By having the hangers P lin 3 3 of Fig. 1 ally attached to the flue protector, they may be Referring pecifically t the drawing in which readily swung about to the desired position for like numerals are used to designate like parts, attachment to the rafters- 35 numeral I designates generally a protection unit Another set of hangers m21y also be provided constructed from tubular members 2 and 3 of the near the opposite end of the protector for some contour but f difierent diameters They taching to the ceiling beams or rafters [9. These are coextensive in length and of sufficient varyare typified by one or more rods 20 having a 40 ing diameters so that when one is inserted withflangedend provided with an elongated slot 40 in the other, there will be a substantial space or 22 therein- The flanged end of the rod is chamber intervening between the walls of the tabbed to the flue protector by a bolt 23 Projecttubular members. They may be Secured by any ing through the tubular member 3 and the elonsuitable means in concentric relation. For this gated slot 22 in the flanged end of rod By purpose, they each may be provided with screw means of the elongated slot vertical adjustment threads preferably on the ends of the exterior may be effected so that the hangers may be D walls to receive end collars 4 and 5 that are pro erly positioned in relation to the ceiling beams vided with sets of screw threads for being screwrafters 0f the building to Which h y are threadedly attached to the ends of both tubular secured- Any Suitable means Such as a od 0 members. The assembly could be effected in the s w 24 a be d d in the d f th hangsame manner by having the screw threads on the ers to engage them with the ceiling beams or interior walls. The collars generally are of the rafters. Any other suitable means may be used same construction, but the outer Wall of the 001- for securing the fire protector unit in place. lar 4 may be slightly tapering in order that it An apron member 25 may be provided on the may be more easily fitted in a hole formed in the exterior of the roof to eflect a water-tight con- 55 nection around the flue protection unit. It is provided with a recess or opening in a flanged end 26 conforming to the contour of the outer wall of the protection unit and the other portion thereof is contoured in conformity with the shape of the roof.

While I have illustrated and described one embodiment in detail for showing how the invention may be carried out, it will be understood that there may be various changes in construction without departing from the spirit of the invention.

I claim:

1. In combination with a flue pipe in a building construction a fire protection unit comprising a tubular member of smaller diameter inserted within a tubular member of larger diameter to provide a space between the walls of the tubular members, and an annular U-shaped collar providing spaced apart substantially parallel flanges adapted to fit over the corresponding ends of the tubular members to hold them in spaced relation and to enclose the space therebetween.

2. In combination with a flue pipe in a building construction a fire protection unit comprising a tubular member of smaller diameter inserted within a tubular member of larger diameter to provide a space between the'walls of the tubular members and annular U-shaped collars providing spaced apart substantially parallel flanges adapted to fit over the opposite corresponding ends of the tubular members to hold them in spaced relation and to enclose the space therebetween. Y

3. In combination with a flue pipe in a building construction a fire protection unit comprising a tubular member of smaller diameter inserted within a tubular member of larger diameter to provide a space between the walls of the tubular members, non-combustible filling material inserted within the space, and an annular U- shaped collar providing spaced apart substantially parallel flanges adapted to fit over the corresponding ends of the tubular members to secure them together.

4. In combination with a flue pipe in a building construction a fire protection unit comprising i a metal tubular member of smaller dimension in serted within a metal tubular member of larger diameter to provide a space between the walls of the tubular members, screw threads provided on the opposite ends of each tubular member, noncombustible filling material inserted within the space, and annular U-shaped collars provided with spaced apart substantially parallel flanges having screw threads for being screw-threadedly attached to the opposite ends of the tubular members for securing same together and enclosing the filling material.

5. In combination with a flue pipe in a building construction a fire protection unit comprising a tubular member having spaced apart inner and outer walls, non-combustible filling material inserted between the walls, annular U- shaped collar means provided with spaced apart substantially parallel flanges for securing the inner and outer walls together and enclosing the filling material, and means for securing the unit in place in the building construction.

6. In combination with a flue pipe in a building construction a fire protection unit comprising a tubular member of smaller diameter inserted within a tubular member of larger diameter to provide a space between the walls of the tubular members, a U-shaped collar provided with spaced apart substantially parallel flanges adapted to fit over the corresponding ends of the tubular members to hold them in spaced relation and to enclose the space therebetween and hanger means attached to the tubular member of larger diameter adapted to be secured to the buildin structure.

7. In combination with a flue pipe in a building construction a fire protection unit comprising a metal tubular member of smaller dimension inserted within a metal tubular member of larger diameter to provide a space between the walls of the tubular members, screw threads provided on the opposite ends of each tubular member, non-combustible filling material inserted within the space, U-shaped collars provided with spaced apart substantially parallel flanges having screw threads for being screw-threadedly attached to the opposite ends of the tubular members for securing same together and enclosing the filling material and hanger means attached to the tubular member of larger diameter adapted to be secured to the building structure.

JOSEPH A. BROWN. 

